Mindball is a fun and interactive exhibit that tests visitors focusing abilities. Exhibit users have the opportunity to challenge their opponent in a mental competition. The goal of playing is to move the giant overhead ball towards your opponents side until it reaches the end. Each side of the table features a headset that players set their foreheads against to play. After pushing the start button, each headset begins to read the visitors’ EEG signals. Mindball computes the EEG signals into a score. As readings are taken, the large overhead ball begins to move towards the visitor with the lower score. Players can see their progress through a small window on the tabletop that has a small metal ball, moving back and forth as watchers can see the progress through the movement of the overhead ball. Once the ball reaches one side, the game is over and ready for new a new competition.